#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/spu.h"
#include "elf32-spu.h"
static bfd_reloc_status_type spu_elf_rel9 (bfd *, arelent *, asymbol *,
void *, asection *,
bfd *, char **);
static reloc_howto_type elf_howto_table[] = {
HOWTO (R_SPU_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont,
bfd_elf_generic_reloc, "SPU_NONE",
FALSE, 0, 0x00000000, FALSE),
HOWTO (R_SPU_ADDR10, 4, 2, 10, FALSE, 14, complain_overflow_bitfield,
bfd_elf_generic_reloc, "SPU_ADDR10",
FALSE, 0, 0x00ffc000, FALSE),
HOWTO (R_SPU_ADDR16, 2, 2, 16, FALSE, 7, complain_overflow_bitfield,
bfd_elf_generic_reloc, "SPU_ADDR16",
FALSE, 0, 0x007fff80, FALSE),
HOWTO (R_SPU_ADDR16_HI, 16, 2, 16, FALSE, 7, complain_overflow_bitfield,
bfd_elf_generic_reloc, "SPU_ADDR16_HI",
FALSE, 0, 0x007fff80, FALSE),
HOWTO (R_SPU_ADDR16_LO, 0, 2, 16, FALSE, 7, complain_overflow_dont,
bfd_elf_generic_reloc, "SPU_ADDR16_LO",
FALSE, 0, 0x007fff80, FALSE),
HOWTO (R_SPU_ADDR18, 0, 2, 18, FALSE, 7, complain_overflow_bitfield,
bfd_elf_generic_reloc, "SPU_ADDR18",
FALSE, 0, 0x01ffff80, FALSE),
HOWTO (R_SPU_ADDR32, 0, 2, 32, FALSE, 0, complain_overflow_dont,
bfd_elf_generic_reloc, "SPU_ADDR32",
FALSE, 0, 0xffffffff, FALSE),
HOWTO (R_SPU_REL16, 2, 2, 16, TRUE, 7, complain_overflow_bitfield,
bfd_elf_generic_reloc, "SPU_REL16",
FALSE, 0, 0x007fff80, TRUE),
HOWTO (R_SPU_ADDR7, 0, 2, 7, FALSE, 14, complain_overflow_dont,
bfd_elf_generic_reloc, "SPU_ADDR7",
FALSE, 0, 0x001fc000, FALSE),
HOWTO (R_SPU_REL9, 2, 2, 9, TRUE, 0, complain_overflow_signed,
spu_elf_rel9, "SPU_REL9",
FALSE, 0, 0x0180007f, TRUE),
HOWTO (R_SPU_REL9I, 2, 2, 9, TRUE, 0, complain_overflow_signed,
spu_elf_rel9, "SPU_REL9I",
FALSE, 0, 0x0000c07f, TRUE),
HOWTO (R_SPU_ADDR10I, 0, 2, 10, FALSE, 14, complain_overflow_signed,
bfd_elf_generic_reloc, "SPU_ADDR10I",
FALSE, 0, 0x00ffc000, FALSE),
HOWTO (R_SPU_ADDR16I, 0, 2, 16, FALSE, 7, complain_overflow_signed,
bfd_elf_generic_reloc, "SPU_ADDR16I",
FALSE, 0, 0x007fff80, FALSE),
HOWTO (R_SPU_REL32, 0, 2, 32, TRUE, 0, complain_overflow_dont,
bfd_elf_generic_reloc, "SPU_REL32",
FALSE, 0, 0xffffffff, TRUE),
};
static struct bfd_elf_special_section const spu_elf_special_sections[] = {
{ ".toe", 4, 0, SHT_NOBITS, SHF_ALLOC },
{ NULL, 0, 0, 0, 0 }
};
static enum elf_spu_reloc_type
spu_elf_bfd_to_reloc_type (bfd_reloc_code_real_type code)
{
switch (code)
{
default:
return R_SPU_NONE;
case BFD_RELOC_SPU_IMM10W:
return R_SPU_ADDR10;
case BFD_RELOC_SPU_IMM16W:
return R_SPU_ADDR16;
case BFD_RELOC_SPU_LO16:
return R_SPU_ADDR16_LO;
case BFD_RELOC_SPU_HI16:
return R_SPU_ADDR16_HI;
case BFD_RELOC_SPU_IMM18:
return R_SPU_ADDR18;
case BFD_RELOC_SPU_PCREL16:
return R_SPU_REL16;
case BFD_RELOC_SPU_IMM7:
return R_SPU_ADDR7;
case BFD_RELOC_SPU_IMM8:
return R_SPU_NONE;
case BFD_RELOC_SPU_PCREL9a:
return R_SPU_REL9;
case BFD_RELOC_SPU_PCREL9b:
return R_SPU_REL9I;
case BFD_RELOC_SPU_IMM10:
return R_SPU_ADDR10I;
case BFD_RELOC_SPU_IMM16:
return R_SPU_ADDR16I;
case BFD_RELOC_32:
return R_SPU_ADDR32;
case BFD_RELOC_32_PCREL:
return R_SPU_REL32;
}
}
static void
spu_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
enum elf_spu_reloc_type r_type;
r_type = (enum elf_spu_reloc_type) ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < R_SPU_max);
cache_ptr->howto = &elf_howto_table[(int) r_type];
}
static reloc_howto_type *
spu_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
return elf_howto_table + spu_elf_bfd_to_reloc_type (code);
}
static bfd_reloc_status_type
spu_elf_rel9 (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section,
bfd *output_bfd, char **error_message)
{
bfd_size_type octets;
bfd_vma val;
long insn;
if (output_bfd != NULL)
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
val = 0;
if (!bfd_is_com_section (symbol->section))
val = symbol->value;
if (symbol->section->output_section)
val += symbol->section->output_section->vma;
val += reloc_entry->addend;
val -= input_section->output_section->vma + input_section->output_offset;
val >>= 2;
if (val + 256 >= 512)
return bfd_reloc_overflow;
insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
val = (val & 0x7f) | ((val & 0x180) << 7) | ((val & 0x180) << 16);
insn &= ~reloc_entry->howto->dst_mask;
insn |= val & reloc_entry->howto->dst_mask;
bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
return bfd_reloc_ok;
}
static bfd_boolean
spu_elf_new_section_hook (bfd *abfd, asection *sec)
{
if (!sec->used_by_bfd)
{
struct _spu_elf_section_data *sdata;
sdata = bfd_zalloc (abfd, sizeof (*sdata));
if (sdata == NULL)
return FALSE;
sec->used_by_bfd = sdata;
}
return _bfd_elf_new_section_hook (abfd, sec);
}
static void
spu_elf_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
{
if (sym->name != NULL
&& sym->section != bfd_abs_section_ptr
&& strncmp (sym->name, "_EAR_", 5) == 0)
sym->flags |= BSF_KEEP;
}
struct spu_link_hash_table
{
struct elf_link_hash_table elf;
struct bfd_hash_table stub_hash_table;
asection *stub;
asection *ovtab;
struct elf_link_hash_entry *ovly_load;
asection **ovl_region;
unsigned int num_buf;
unsigned int num_overlays;
unsigned int emit_stub_syms:1;
unsigned int non_overlay_stubs : 1;
unsigned int stub_overflow : 1;
};
#define spu_hash_table(p) \
((struct spu_link_hash_table *) ((p)->hash))
struct spu_stub_hash_entry
{
struct bfd_hash_entry root;
asection *target_section;
bfd_vma target_off;
bfd_vma off;
bfd_vma delta;
};
static struct bfd_hash_entry *
stub_hash_newfunc (struct bfd_hash_entry *entry,
struct bfd_hash_table *table,
const char *string)
{
if (entry == NULL)
{
entry = bfd_hash_allocate (table, sizeof (struct spu_stub_hash_entry));
if (entry == NULL)
return entry;
}
entry = bfd_hash_newfunc (entry, table, string);
if (entry != NULL)
{
struct spu_stub_hash_entry *sh = (struct spu_stub_hash_entry *) entry;
sh->target_section = NULL;
sh->target_off = 0;
sh->off = 0;
sh->delta = 0;
}
return entry;
}
static struct bfd_link_hash_table *
spu_elf_link_hash_table_create (bfd *abfd)
{
struct spu_link_hash_table *htab;
htab = bfd_malloc (sizeof (*htab));
if (htab == NULL)
return NULL;
if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd,
_bfd_elf_link_hash_newfunc,
sizeof (struct elf_link_hash_entry)))
{
free (htab);
return NULL;
}
if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
sizeof (struct spu_stub_hash_entry)))
return NULL;
memset (&htab->stub, 0,
sizeof (*htab) - offsetof (struct spu_link_hash_table, stub));
return &htab->elf.root;
}
static void
spu_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
{
struct spu_link_hash_table *ret = (struct spu_link_hash_table *) hash;
bfd_hash_table_free (&ret->stub_hash_table);
_bfd_generic_link_hash_table_free (hash);
}
static bfd_boolean
get_sym_h (struct elf_link_hash_entry **hp,
Elf_Internal_Sym **symp,
asection **symsecp,
Elf_Internal_Sym **locsymsp,
unsigned long r_symndx,
bfd *ibfd)
{
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
if (r_symndx >= symtab_hdr->sh_info)
{
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
struct elf_link_hash_entry *h;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (hp != NULL)
*hp = h;
if (symp != NULL)
*symp = NULL;
if (symsecp != NULL)
{
asection *symsec = NULL;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
symsec = h->root.u.def.section;
*symsecp = symsec;
}
}
else
{
Elf_Internal_Sym *sym;
Elf_Internal_Sym *locsyms = *locsymsp;
if (locsyms == NULL)
{
locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
if (locsyms == NULL)
locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
symtab_hdr->sh_info,
0, NULL, NULL, NULL);
if (locsyms == NULL)
return FALSE;
*locsymsp = locsyms;
}
sym = locsyms + r_symndx;
if (hp != NULL)
*hp = NULL;
if (symp != NULL)
*symp = sym;
if (symsecp != NULL)
{
asection *symsec = NULL;
if ((sym->st_shndx != SHN_UNDEF
&& sym->st_shndx < SHN_LORESERVE)
|| sym->st_shndx > SHN_HIRESERVE)
symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
*symsecp = symsec;
}
}
return TRUE;
}
static char *
spu_stub_name (const asection *input_sec,
const asection *sym_sec,
const struct elf_link_hash_entry *h,
const Elf_Internal_Rela *rel)
{
char *stub_name;
bfd_size_type len;
if (h)
{
len = 8 + 1 + strlen (h->root.root.string) + 1 + 8 + 1;
stub_name = bfd_malloc (len);
if (stub_name == NULL)
return stub_name;
sprintf (stub_name, "%08x.%s+%x",
input_sec->id & 0xffffffff,
h->root.root.string,
(int) rel->r_addend & 0xffffffff);
len -= 8;
}
else
{
len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
stub_name = bfd_malloc (len);
if (stub_name == NULL)
return stub_name;
sprintf (stub_name, "%08x.%x:%x+%x",
input_sec->id & 0xffffffff,
sym_sec->id & 0xffffffff,
(int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
(int) rel->r_addend & 0xffffffff);
len = strlen (stub_name);
}
if (stub_name[len - 2] == '+'
&& stub_name[len - 1] == '0'
&& stub_name[len] == 0)
stub_name[len - 2] = 0;
return stub_name;
}
bfd_boolean
spu_elf_create_sections (bfd *output_bfd, struct bfd_link_info *info)
{
bfd *ibfd;
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->next)
if (bfd_get_section_by_name (ibfd, SPU_PTNOTE_SPUNAME) != NULL)
break;
if (ibfd == NULL)
{
asection *s;
size_t name_len;
size_t size;
bfd_byte *data;
flagword flags;
ibfd = info->input_bfds;
flags = SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
s = bfd_make_section_anyway_with_flags (ibfd, SPU_PTNOTE_SPUNAME, flags);
if (s == NULL
|| !bfd_set_section_alignment (ibfd, s, 4))
return FALSE;
name_len = strlen (bfd_get_filename (output_bfd)) + 1;
size = 12 + ((sizeof (SPU_PLUGIN_NAME) + 3) & -4);
size += (name_len + 3) & -4;
if (!bfd_set_section_size (ibfd, s, size))
return FALSE;
data = bfd_zalloc (ibfd, size);
if (data == NULL)
return FALSE;
bfd_put_32 (ibfd, sizeof (SPU_PLUGIN_NAME), data + 0);
bfd_put_32 (ibfd, name_len, data + 4);
bfd_put_32 (ibfd, 1, data + 8);
memcpy (data + 12, SPU_PLUGIN_NAME, sizeof (SPU_PLUGIN_NAME));
memcpy (data + 12 + ((sizeof (SPU_PLUGIN_NAME) + 3) & -4),
bfd_get_filename (output_bfd), name_len);
s->contents = data;
}
return TRUE;
}
static asection *
spu_elf_gc_mark_hook (asection *sec,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
Elf_Internal_Rela *rel ATTRIBUTE_UNUSED,
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
if (h != NULL)
{
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
return h->root.u.def.section;
case bfd_link_hash_common:
return h->root.u.c.p->section;
default:
break;
}
}
else
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
return NULL;
}
static int
sort_sections (const void *a, const void *b)
{
const asection *const *s1 = a;
const asection *const *s2 = b;
bfd_signed_vma delta = (*s1)->vma - (*s2)->vma;
if (delta != 0)
return delta < 0 ? -1 : 1;
return (*s1)->index - (*s2)->index;
}
bfd_boolean
spu_elf_find_overlays (bfd *output_bfd, struct bfd_link_info *info)
{
struct spu_link_hash_table *htab = spu_hash_table (info);
asection **alloc_sec;
unsigned int i, n, ovl_index, num_buf;
asection *s;
bfd_vma ovl_end;
if (output_bfd->section_count < 2)
return FALSE;
alloc_sec = bfd_malloc (output_bfd->section_count * sizeof (*alloc_sec));
if (alloc_sec == NULL)
return FALSE;
for (n = 0, s = output_bfd->sections; s != NULL; s = s->next)
if ((s->flags & SEC_ALLOC) != 0
&& (s->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != SEC_THREAD_LOCAL
&& s->size != 0)
alloc_sec[n++] = s;
if (n == 0)
{
free (alloc_sec);
return FALSE;
}
qsort (alloc_sec, n, sizeof (*alloc_sec), sort_sections);
ovl_end = alloc_sec[0]->vma + alloc_sec[0]->size;
for (ovl_index = 0, num_buf = 0, i = 1; i < n; i++)
{
s = alloc_sec[i];
if (s->vma < ovl_end)
{
asection *s0 = alloc_sec[i - 1];
if (spu_elf_section_data (s0)->ovl_index == 0)
{
spu_elf_section_data (s0)->ovl_index = ++ovl_index;
alloc_sec[num_buf * 2] = s0;
alloc_sec[num_buf * 2 + 1] = s0;
num_buf++;
}
spu_elf_section_data (s)->ovl_index = ++ovl_index;
if (ovl_end < s->vma + s->size)
{
ovl_end = s->vma + s->size;
alloc_sec[num_buf * 2 - 1] = s;
}
}
else
ovl_end = s->vma + s->size;
}
htab->num_overlays = ovl_index;
htab->num_buf = num_buf;
if (ovl_index == 0)
{
free (alloc_sec);
return FALSE;
}
alloc_sec = bfd_realloc (alloc_sec, num_buf * 2 * sizeof (*alloc_sec));
if (alloc_sec == NULL)
return FALSE;
htab->ovl_region = alloc_sec;
return TRUE;
}
#define SIZEOF_STUB1 8
#define ILA_79 0x4200004f
#define BR 0x32000000
#define SIZEOF_STUB2 8
#define ILA_78 0x4200004e
#define NOP 0x40200000
static bfd_boolean
is_branch (const unsigned char *insn)
{
return (((insn[0] & 0xec) == 0x20 && (insn[1] & 0x80) == 0)
|| (insn[0] & 0xfc) == 0x10);
}
struct stubarr {
struct spu_stub_hash_entry **sh;
unsigned int count;
};
static bfd_boolean
populate_stubs (struct bfd_hash_entry *bh, void *inf)
{
struct stubarr *stubs = inf;
stubs->sh[--stubs->count] = (struct spu_stub_hash_entry *) bh;
return TRUE;
}
static int
sort_stubs (const void *a, const void *b)
{
const struct spu_stub_hash_entry *const *sa = a;
const struct spu_stub_hash_entry *const *sb = b;
int i;
bfd_signed_vma d;
i = spu_elf_section_data ((*sa)->target_section->output_section)->ovl_index;
i -= spu_elf_section_data ((*sb)->target_section->output_section)->ovl_index;
if (i != 0)
return i;
d = ((*sa)->target_section->output_section->vma
+ (*sa)->target_section->output_offset
+ (*sa)->target_off
- (*sb)->target_section->output_section->vma
- (*sb)->target_section->output_offset
- (*sb)->target_off);
if (d != 0)
return d < 0 ? -1 : 1;
i = strcmp ((*sb)->root.string, (*sa)->root.string);
BFD_ASSERT (i != 0);
return i;
}
bfd_boolean
spu_elf_size_stubs (bfd *output_bfd,
struct bfd_link_info *info,
int non_overlay_stubs,
asection **stub,
asection **ovtab,
asection **toe)
{
struct spu_link_hash_table *htab = spu_hash_table (info);
bfd *ibfd;
struct stubarr stubs;
unsigned i, group;
flagword flags;
htab->non_overlay_stubs = non_overlay_stubs;
stubs.count = 0;
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
extern const bfd_target bfd_elf32_spu_vec;
Elf_Internal_Shdr *symtab_hdr;
asection *section;
Elf_Internal_Sym *local_syms = NULL;
if (ibfd->xvec != &bfd_elf32_spu_vec)
continue;
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
if (symtab_hdr->sh_info == 0)
continue;
for (section = ibfd->sections; section != NULL; section = section->next)
{
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
if ((section->flags & SEC_RELOC) == 0
|| (section->flags & SEC_ALLOC) == 0
|| (section->flags & SEC_LOAD) == 0
|| section->reloc_count == 0)
continue;
if (section->output_section == NULL
|| section->output_section->owner != output_bfd)
continue;
internal_relocs
= _bfd_elf_link_read_relocs (ibfd, section, NULL, NULL,
info->keep_memory);
if (internal_relocs == NULL)
goto error_ret_free_local;
irela = internal_relocs;
irelaend = irela + section->reloc_count;
for (; irela < irelaend; irela++)
{
enum elf_spu_reloc_type r_type;
unsigned int r_indx;
asection *sym_sec;
Elf_Internal_Sym *sym;
struct elf_link_hash_entry *h;
char *stub_name;
struct spu_stub_hash_entry *sh;
unsigned int sym_type;
enum _insn_type { non_branch, branch, call } insn_type;
r_type = ELF32_R_TYPE (irela->r_info);
r_indx = ELF32_R_SYM (irela->r_info);
if (r_type >= R_SPU_max)
{
bfd_set_error (bfd_error_bad_value);
goto error_ret_free_internal;
}
if (!get_sym_h (&h, &sym, &sym_sec, &local_syms, r_indx, ibfd))
goto error_ret_free_internal;
if (sym_sec == NULL
|| sym_sec->output_section == NULL
|| sym_sec->output_section->owner != output_bfd)
continue;
if (h != NULL
&& (strcmp (h->root.root.string, "__ovly_load") == 0
|| strcmp (h->root.root.string, "__ovly_return") == 0))
continue;
insn_type = non_branch;
if (r_type == R_SPU_REL16
|| r_type == R_SPU_ADDR16)
{
unsigned char insn[4];
if (!bfd_get_section_contents (ibfd, section, insn,
irela->r_offset, 4))
goto error_ret_free_internal;
if (is_branch (insn))
{
insn_type = branch;
if ((insn[0] & 0xfd) == 0x31)
insn_type = call;
}
}
if (h != NULL)
sym_type = h->type;
else
sym_type = ELF_ST_TYPE (sym->st_info);
if (sym_type != STT_FUNC)
{
if (insn_type == call)
{
const char *sym_name;
if (h != NULL)
sym_name = h->root.root.string;
else
sym_name = bfd_elf_sym_name (sym_sec->owner,
symtab_hdr,
sym,
sym_sec);
(*_bfd_error_handler) (_("warning: call to non-function"
" symbol %s defined in %B"),
sym_name, sym_sec->owner);
}
else
continue;
}
if (!spu_elf_section_data (sym_sec->output_section)->ovl_index
&& !non_overlay_stubs)
continue;
if (spu_elf_section_data (sym_sec->output_section)->ovl_index
== spu_elf_section_data (section->output_section)->ovl_index)
{
if (insn_type != non_branch)
continue;
}
stub_name = spu_stub_name (section, sym_sec, h, irela);
if (stub_name == NULL)
goto error_ret_free_internal;
sh = (struct spu_stub_hash_entry *)
bfd_hash_lookup (&htab->stub_hash_table, stub_name,
TRUE, FALSE);
if (sh == NULL)
{
free (stub_name);
error_ret_free_internal:
if (elf_section_data (section)->relocs != internal_relocs)
free (internal_relocs);
error_ret_free_local:
if (local_syms != NULL
&& (symtab_hdr->contents
!= (unsigned char *) local_syms))
free (local_syms);
return FALSE;
}
if (sh->target_section != NULL)
{
free (stub_name);
continue;
}
sh->target_section = sym_sec;
if (h != NULL)
sh->target_off = h->root.u.def.value;
else
sh->target_off = sym->st_value;
sh->target_off += irela->r_addend;
stubs.count += 1;
}
if (elf_section_data (section)->relocs != internal_relocs)
free (internal_relocs);
}
if (local_syms != NULL
&& symtab_hdr->contents != (unsigned char *) local_syms)
{
if (!info->keep_memory)
free (local_syms);
else
symtab_hdr->contents = (unsigned char *) local_syms;
}
}
*stub = NULL;
if (stubs.count == 0)
return TRUE;
ibfd = info->input_bfds;
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
| SEC_HAS_CONTENTS | SEC_IN_MEMORY);
htab->stub = bfd_make_section_anyway_with_flags (ibfd, ".stub", flags);
*stub = htab->stub;
if (htab->stub == NULL
|| !bfd_set_section_alignment (ibfd, htab->stub, 2))
return FALSE;
flags = (SEC_ALLOC | SEC_LOAD
| SEC_HAS_CONTENTS | SEC_IN_MEMORY);
htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags);
*ovtab = htab->ovtab;
if (htab->ovtab == NULL
|| !bfd_set_section_alignment (ibfd, htab->stub, 4))
return FALSE;
*toe = bfd_make_section_anyway_with_flags (ibfd, ".toe", SEC_ALLOC);
if (*toe == NULL
|| !bfd_set_section_alignment (ibfd, *toe, 4))
return FALSE;
(*toe)->size = 16;
stubs.sh = bfd_malloc (stubs.count * sizeof (*stubs.sh));
if (stubs.sh == NULL)
return FALSE;
i = stubs.count;
bfd_hash_traverse (&htab->stub_hash_table, populate_stubs, &stubs);
BFD_ASSERT (stubs.count == 0);
stubs.count = i;
qsort (stubs.sh, stubs.count, sizeof (*stubs.sh), sort_stubs);
group = 0;
for (i = 0; i < stubs.count; i++)
{
if (spu_elf_section_data (stubs.sh[group]->target_section
->output_section)->ovl_index
!= spu_elf_section_data (stubs.sh[i]->target_section
->output_section)->ovl_index)
{
htab->stub->size += SIZEOF_STUB2;
for (; group != i; group++)
stubs.sh[group]->delta
= stubs.sh[i - 1]->off - stubs.sh[group]->off;
}
if (group == i
|| ((stubs.sh[i - 1]->target_section->output_section->vma
+ stubs.sh[i - 1]->target_section->output_offset
+ stubs.sh[i - 1]->target_off)
!= (stubs.sh[i]->target_section->output_section->vma
+ stubs.sh[i]->target_section->output_offset
+ stubs.sh[i]->target_off)))
{
stubs.sh[i]->off = htab->stub->size;
htab->stub->size += SIZEOF_STUB1;
}
else
stubs.sh[i]->off = stubs.sh[i - 1]->off;
}
if (group != i)
htab->stub->size += SIZEOF_STUB2;
for (; group != i; group++)
stubs.sh[group]->delta = stubs.sh[i - 1]->off - stubs.sh[group]->off;
htab->ovtab->alignment_power = 4;
htab->ovtab->size = htab->num_overlays * 16 + htab->num_buf * 4;
return TRUE;
}
static void *
ovl_mgr_open (struct bfd *nbfd ATTRIBUTE_UNUSED, void *stream)
{
return stream;
}
static file_ptr
ovl_mgr_pread (struct bfd *abfd ATTRIBUTE_UNUSED,
void *stream,
void *buf,
file_ptr nbytes,
file_ptr offset)
{
struct _ovl_stream *os;
size_t count;
size_t max;
os = (struct _ovl_stream *) stream;
max = (char *) os->end - (char *) os->start;
if ((ufile_ptr) offset >= max)
return 0;
count = nbytes;
if (count > max - offset)
count = max - offset;
memcpy (buf, (char *) os->start + offset, count);
return count;
}
bfd_boolean
spu_elf_open_builtin_lib (bfd **ovl_bfd, const struct _ovl_stream *stream)
{
*ovl_bfd = bfd_openr_iovec ("builtin ovl_mgr",
"elf32-spu",
ovl_mgr_open,
(void *) stream,
ovl_mgr_pread,
NULL,
NULL);
return *ovl_bfd != NULL;
}
static bfd_boolean
write_one_stub (struct bfd_hash_entry *bh, void *inf)
{
struct spu_stub_hash_entry *ent = (struct spu_stub_hash_entry *) bh;
struct spu_link_hash_table *htab = inf;
asection *sec = htab->stub;
asection *s = ent->target_section;
unsigned int ovl;
bfd_vma val;
val = ent->target_off + s->output_offset + s->output_section->vma;
bfd_put_32 (sec->owner, ILA_79 + ((val << 7) & 0x01ffff80),
sec->contents + ent->off);
val = ent->delta + 4;
bfd_put_32 (sec->owner, BR + ((val << 5) & 0x007fff80),
sec->contents + ent->off + 4);
if (ent->delta == 0)
{
bfd_put_32 (sec->owner, NOP,
sec->contents + ent->off + 4);
ovl = spu_elf_section_data (s->output_section)->ovl_index;
bfd_put_32 (sec->owner, ILA_78 + ((ovl << 7) & 0x01ffff80),
sec->contents + ent->off + 8);
val = (htab->ovly_load->root.u.def.section->output_section->vma
+ htab->ovly_load->root.u.def.section->output_offset
+ htab->ovly_load->root.u.def.value
- (sec->output_section->vma
+ sec->output_offset
+ ent->off + 12));
if (val + 0x20000 >= 0x40000)
htab->stub_overflow = TRUE;
bfd_put_32 (sec->owner, BR + ((val << 5) & 0x007fff80),
sec->contents + ent->off + 12);
}
if (htab->emit_stub_syms)
{
struct elf_link_hash_entry *h;
size_t len1, len2;
char *name;
len1 = sizeof ("ovl_call.") - 1;
len2 = strlen (ent->root.string);
name = bfd_malloc (len1 + len2 + 1);
if (name == NULL)
return FALSE;
memcpy (name, ent->root.string, 9);
memcpy (name + 9, "ovl_call.", len1);
memcpy (name + 9 + len1, ent->root.string + 9, len2 - 9 + 1);
h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
if (h == NULL)
return FALSE;
if (h->root.type == bfd_link_hash_new)
{
h->root.type = bfd_link_hash_defined;
h->root.u.def.section = sec;
h->root.u.def.value = ent->off;
h->size = (ent->delta == 0
? SIZEOF_STUB1 + SIZEOF_STUB2 : SIZEOF_STUB1);
h->type = STT_FUNC;
h->ref_regular = 1;
h->def_regular = 1;
h->ref_regular_nonweak = 1;
h->forced_local = 1;
h->non_elf = 0;
}
}
return TRUE;
}
static struct elf_link_hash_entry *
define_ovtab_symbol (struct spu_link_hash_table *htab, const char *name)
{
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
if (h == NULL)
return NULL;
if (h->root.type != bfd_link_hash_defined
|| !h->def_regular)
{
h->root.type = bfd_link_hash_defined;
h->root.u.def.section = htab->ovtab;
h->type = STT_OBJECT;
h->ref_regular = 1;
h->def_regular = 1;
h->ref_regular_nonweak = 1;
h->non_elf = 0;
}
else
{
(*_bfd_error_handler) (_("%B is not allowed to define %s"),
h->root.u.def.section->owner,
h->root.root.string);
bfd_set_error (bfd_error_bad_value);
return NULL;
}
return h;
}
bfd_boolean
spu_elf_build_stubs (struct bfd_link_info *info, int emit_syms, asection *toe)
{
struct spu_link_hash_table *htab = spu_hash_table (info);
struct elf_link_hash_entry *h;
bfd_byte *p;
asection *s;
bfd *obfd;
unsigned int i;
htab->emit_stub_syms = emit_syms;
htab->stub->contents = bfd_zalloc (htab->stub->owner, htab->stub->size);
if (htab->stub->contents == NULL)
return FALSE;
h = elf_link_hash_lookup (&htab->elf, "__ovly_load", FALSE, FALSE, FALSE);
htab->ovly_load = h;
BFD_ASSERT (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& h->def_regular);
s = h->root.u.def.section->output_section;
if (spu_elf_section_data (s)->ovl_index)
{
(*_bfd_error_handler) (_("%s in overlay section"),
h->root.u.def.section->owner);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
bfd_hash_traverse (&htab->stub_hash_table, write_one_stub, htab);
if (htab->stub_overflow)
{
(*_bfd_error_handler) (_("overlay stub relocation overflow"));
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
htab->ovtab->contents = bfd_zalloc (htab->ovtab->owner, htab->ovtab->size);
if (htab->ovtab->contents == NULL)
return FALSE;
p = htab->ovtab->contents;
obfd = htab->ovtab->output_section->owner;
for (s = obfd->sections; s != NULL; s = s->next)
{
unsigned int ovl_index = spu_elf_section_data (s)->ovl_index;
if (ovl_index != 0)
{
unsigned int lo, hi, mid;
unsigned long off = (ovl_index - 1) * 16;
bfd_put_32 (htab->ovtab->owner, s->vma, p + off);
bfd_put_32 (htab->ovtab->owner, (s->size + 15) & -16, p + off + 4);
lo = 0;
hi = htab->num_buf;
while (lo < hi)
{
mid = (lo + hi) >> 1;
if (htab->ovl_region[2 * mid + 1]->vma
+ htab->ovl_region[2 * mid + 1]->size <= s->vma)
lo = mid + 1;
else if (htab->ovl_region[2 * mid]->vma > s->vma)
hi = mid;
else
{
bfd_put_32 (htab->ovtab->owner, mid + 1, p + off + 12);
break;
}
}
BFD_ASSERT (lo < hi);
}
}
p = htab->ovtab->contents + htab->num_overlays * 16;
for (i = 0; i < htab->num_buf; i++)
{
bfd_put_32 (htab->ovtab->owner, 0, p);
p += 4;
}
h = define_ovtab_symbol (htab, "_ovly_table");
if (h == NULL)
return FALSE;
h->root.u.def.value = 0;
h->size = htab->num_overlays * 16;
h = define_ovtab_symbol (htab, "_ovly_table_end");
if (h == NULL)
return FALSE;
h->root.u.def.value = htab->num_overlays * 16;
h->size = 0;
h = define_ovtab_symbol (htab, "_ovly_buf_table");
if (h == NULL)
return FALSE;
h->root.u.def.value = htab->num_overlays * 16;
h->size = htab->num_buf * 4;
h = define_ovtab_symbol (htab, "_ovly_buf_table_end");
if (h == NULL)
return FALSE;
h->root.u.def.value = htab->num_overlays * 16 + htab->num_buf * 4;
h->size = 0;
h = define_ovtab_symbol (htab, "_EAR_");
if (h == NULL)
return FALSE;
h->root.u.def.section = toe;
h->root.u.def.value = 0;
h->size = 16;
return TRUE;
}
static bfd_boolean
spu_elf_relocate_section (bfd *output_bfd,
struct bfd_link_info *info,
bfd *input_bfd,
asection *input_section,
bfd_byte *contents,
Elf_Internal_Rela *relocs,
Elf_Internal_Sym *local_syms,
asection **local_sections)
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
Elf_Internal_Rela *rel, *relend;
struct spu_link_hash_table *htab;
bfd_boolean ret = TRUE;
if (info->relocatable)
return TRUE;
htab = spu_hash_table (info);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = (struct elf_link_hash_entry **) (elf_sym_hashes (input_bfd));
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
Elf_Internal_Sym *sym;
asection *sec;
struct elf_link_hash_entry *h;
const char *sym_name;
bfd_vma relocation;
bfd_vma addend;
bfd_reloc_status_type r;
bfd_boolean unresolved_reloc;
bfd_boolean warned;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
howto = elf_howto_table + r_type;
unresolved_reloc = FALSE;
warned = FALSE;
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
sym_name = h->root.root.string;
}
if (unresolved_reloc)
{
(*_bfd_error_handler)
(_("%B(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
input_bfd,
bfd_get_section_name (input_bfd, input_section),
(long) rel->r_offset,
howto->name,
sym_name);
ret = FALSE;
}
addend = rel->r_addend;
if (sec != NULL
&& sec->output_section != NULL
&& sec->output_section->owner == output_bfd
&& (spu_elf_section_data (sec->output_section)->ovl_index != 0
|| htab->non_overlay_stubs)
&& !(sec == input_section
&& is_branch (contents + rel->r_offset)))
{
char *stub_name;
struct spu_stub_hash_entry *sh;
stub_name = spu_stub_name (input_section, sec, h, rel);
if (stub_name == NULL)
return FALSE;
sh = (struct spu_stub_hash_entry *)
bfd_hash_lookup (&htab->stub_hash_table, stub_name, FALSE, FALSE);
if (sh != NULL)
{
relocation = (htab->stub->output_section->vma
+ htab->stub->output_offset
+ sh->off);
addend = 0;
}
free (stub_name);
}
r = _bfd_final_link_relocate (howto,
input_bfd,
input_section,
contents,
rel->r_offset, relocation, addend);
if (r != bfd_reloc_ok)
{
const char *msg = (const char *) 0;
switch (r)
{
case bfd_reloc_overflow:
if (!((*info->callbacks->reloc_overflow)
(info, (h ? &h->root : NULL), sym_name, howto->name,
(bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
return FALSE;
break;
case bfd_reloc_undefined:
if (!((*info->callbacks->undefined_symbol)
(info, sym_name, input_bfd, input_section,
rel->r_offset, TRUE)))
return FALSE;
break;
case bfd_reloc_outofrange:
msg = _("internal error: out of range error");
goto common_error;
case bfd_reloc_notsupported:
msg = _("internal error: unsupported relocation error");
goto common_error;
case bfd_reloc_dangerous:
msg = _("internal error: dangerous error");
goto common_error;
default:
msg = _("internal error: unknown error");
common_error:
if (!((*info->callbacks->warning)
(info, msg, sym_name, input_bfd, input_section,
rel->r_offset)))
return FALSE;
break;
}
}
}
return ret;
}
static int spu_plugin = 0;
void
spu_elf_plugin (int val)
{
spu_plugin = val;
}
static void
spu_elf_post_process_headers (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
if (spu_plugin)
{
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
i_ehdrp->e_type = ET_DYN;
}
}
static int
spu_elf_additional_program_headers (bfd *abfd, struct bfd_link_info *info)
{
struct spu_link_hash_table *htab = spu_hash_table (info);
int extra = htab->num_overlays;
asection *sec;
if (extra)
++extra;
sec = bfd_get_section_by_name (abfd, ".toe");
if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
++extra;
return extra;
}
static bfd_boolean
spu_elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
{
asection *toe, *s;
struct elf_segment_map *m;
unsigned int i;
if (info == NULL)
return TRUE;
toe = bfd_get_section_by_name (abfd, ".toe");
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
if (m->p_type == PT_LOAD && m->count > 1)
for (i = 0; i < m->count; i++)
if ((s = m->sections[i]) == toe
|| spu_elf_section_data (s)->ovl_index != 0)
{
struct elf_segment_map *m2;
bfd_vma amt;
if (i + 1 < m->count)
{
amt = sizeof (struct elf_segment_map);
amt += (m->count - (i + 2)) * sizeof (m->sections[0]);
m2 = bfd_zalloc (abfd, amt);
if (m2 == NULL)
return FALSE;
m2->count = m->count - (i + 1);
memcpy (m2->sections, m->sections + i + 1,
m2->count * sizeof (m->sections[0]));
m2->p_type = PT_LOAD;
m2->next = m->next;
m->next = m2;
}
m->count = 1;
if (i != 0)
{
m->count = i;
amt = sizeof (struct elf_segment_map);
m2 = bfd_zalloc (abfd, amt);
if (m2 == NULL)
return FALSE;
m2->p_type = PT_LOAD;
m2->count = 1;
m2->sections[0] = s;
m2->next = m->next;
m->next = m2;
}
break;
}
return TRUE;
}
asection *
spu_elf_check_vma (bfd *abfd, bfd_vma lo, bfd_vma hi)
{
struct elf_segment_map *m;
unsigned int i;
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
if (m->p_type == PT_LOAD)
for (i = 0; i < m->count; i++)
if (m->sections[i]->size != 0
&& (m->sections[i]->vma < lo
|| m->sections[i]->vma > hi
|| m->sections[i]->vma + m->sections[i]->size - 1 > hi))
return m->sections[i];
return NULL;
}
static int
spu_elf_modify_program_headers (bfd *abfd, struct bfd_link_info *info)
{
const struct elf_backend_data *bed;
struct elf_obj_tdata *tdata;
Elf_Internal_Phdr *phdr, *last;
struct spu_link_hash_table *htab;
unsigned int count;
unsigned int i;
if (info == NULL)
return TRUE;
bed = get_elf_backend_data (abfd);
tdata = elf_tdata (abfd);
phdr = tdata->phdr;
count = tdata->program_header_size / bed->s->sizeof_phdr;
htab = spu_hash_table (info);
if (htab->num_overlays != 0)
{
struct elf_segment_map *m;
unsigned int o;
for (i = 0, m = elf_tdata (abfd)->segment_map; m; ++i, m = m->next)
if (m->count != 0
&& (o = spu_elf_section_data (m->sections[0])->ovl_index) != 0)
{
phdr[i].p_flags |= PF_OVERLAY;
if (htab->ovtab != NULL && htab->ovtab->size != 0)
{
bfd_byte *p = htab->ovtab->contents;
unsigned int off = (o - 1) * 16 + 8;
bfd_put_32 (htab->ovtab->owner, phdr[i].p_offset, p + off);
}
}
}
last = NULL;
for (i = count; i-- != 0; )
if (phdr[i].p_type == PT_LOAD)
{
unsigned adjust;
adjust = -phdr[i].p_filesz & 15;
if (adjust != 0
&& last != NULL
&& phdr[i].p_offset + phdr[i].p_filesz > last->p_offset - adjust)
break;
adjust = -phdr[i].p_memsz & 15;
if (adjust != 0
&& last != NULL
&& phdr[i].p_filesz != 0
&& phdr[i].p_vaddr + phdr[i].p_memsz > last->p_vaddr - adjust
&& phdr[i].p_vaddr + phdr[i].p_memsz <= last->p_vaddr)
break;
if (phdr[i].p_filesz != 0)
last = &phdr[i];
}
if (i == (unsigned int) -1)
for (i = count; i-- != 0; )
if (phdr[i].p_type == PT_LOAD)
{
unsigned adjust;
adjust = -phdr[i].p_filesz & 15;
phdr[i].p_filesz += adjust;
adjust = -phdr[i].p_memsz & 15;
phdr[i].p_memsz += adjust;
}
return TRUE;
}
static bfd_boolean
spu_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED,
Elf_Internal_Shdr *i_shdrp)
{
asection *sec;
sec = i_shdrp->bfd_section;
if (sec != NULL
&& (sec->flags & SEC_LINKER_CREATED) != 0
&& sec->name != NULL
&& strcmp (sec->name, SPU_PTNOTE_SPUNAME) == 0)
i_shdrp->contents = sec->contents;
return TRUE;
}
#define TARGET_BIG_SYM bfd_elf32_spu_vec
#define TARGET_BIG_NAME "elf32-spu"
#define ELF_ARCH bfd_arch_spu
#define ELF_MACHINE_CODE EM_SPU
#define ELF_MAXPAGESIZE 0x80
#define elf_backend_rela_normal 1
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_reloc_type_lookup spu_elf_reloc_type_lookup
#define elf_info_to_howto spu_elf_info_to_howto
#define elf_backend_gc_mark_hook spu_elf_gc_mark_hook
#define elf_backend_relocate_section spu_elf_relocate_section
#define elf_backend_symbol_processing spu_elf_backend_symbol_processing
#define bfd_elf32_new_section_hook spu_elf_new_section_hook
#define bfd_elf32_bfd_link_hash_table_create spu_elf_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_free spu_elf_link_hash_table_free
#define elf_backend_additional_program_headers spu_elf_additional_program_headers
#define elf_backend_modify_segment_map spu_elf_modify_segment_map
#define elf_backend_modify_program_headers spu_elf_modify_program_headers
#define elf_backend_post_process_headers spu_elf_post_process_headers
#define elf_backend_section_processing spu_elf_section_processing
#define elf_backend_special_sections spu_elf_special_sections
#include "elf32-target.h"